Those decisions aren't minor trifles which Musk inexplicably micro-manages. They are core to the entire differentiation between SpaceX and its rivals. He's an engineer, of course he's going to be involved in such decisions. Claiming otherwise is like saying that Steve Jobs shouldn't have had any opinion on switching from MacOS Classic to NeXTStep as a base for macOS.

Sometimes dictators are able to choose optimal policies, even with all the costs.

And yes, most firms are command economies, after all. As CEO...